Home / 136,409.04-188,201.16-76,781.52

Finding the Fourth Proportional to 136,409.04, 188,201.16 and 76,781.52

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Solution

The fourth proportional to 136,409.04, 188,201.16 and 76,781.52 is: 105,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,409.04 : 188,201.16 = 76,781.52 : x
  2. Step 2: Convert to fraction form
    136,409.04/188,201.16 = 76,781.52/x
  3. Step 3: Cross multiply
    136,409.04x = 188,201.16 × 76,781.52
  4. Step 4: Simplify right side
    136,409.04x = 14,450,371,130.56
  5. Step 5: Solve for x
    x = 14,450,371,130.56/136,409.04
  6. Step 6: Final answer
    x = 105,934.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.